DYMO Rhino 6000 Replacement Battery 7.4V 1600mAh 1738637

DYMO Rhino 6000 / 5200 / 5000 — 7.4V Li-ion Replacement Battery (1738637)

This 7.4V, 1600mAh Li-ion battery replaces the OEM 1738637 cell in the DYMO Rhino 6000, Rhino 5200, and Rhino 5000 portable industrial label makers. These handheld thermal printers are used in warehouses, electrical panels, and field environments where labels need to print on demand. Voltage and connector spec match the original to keep the printer's BMS handshake intact.

• Rhino 6000, 5200, and 5000 compatibility: All three models run the same 7.4V battery rail, share the 1738637 part number, and use the same connector and BMS communication protocol — one cell fits all three without modification.
• Bench tested on actual hardware: We cycled this cell through the Rhino 6000's BMS on the bench. The protection circuit accepted the charge profile without fault flags, and the thermal head drew stable current at full print density across the test cycle.
• First-deployment print calibration: After installing, charge the battery fully, then print five continuous test labels before deploying in the field. The Rhino's paper feed motor uses current draw during those first prints to confirm the BMS is delivering the correct current profile for the new cell.

Why the Rhino 6000 won't print after sitting unused for weeks

Li-ion cells self-discharge at roughly 2–3% per month. If a Rhino 6000 sits unused long enough, the battery can drop below the BMS's minimum motor drive threshold — typically around 6.8V for this platform. At that voltage, the printer powers on but refuses to drive the feed motor or fire the thermal head. A full charge cycle to 8.4V resets the BMS state and restores normal print function. If the OEM cell has deep-discharged repeatedly, cell recovery may be incomplete — that's when a fresh 1738637-spec cell is the direct fix.

Rhino printing faded or uneven labels on a charged battery

The thermal print head in the Rhino 5000/5200/6000 series requires a stable voltage to maintain consistent head temperature across a full label pass. When a degraded cell sags under the thermal head's current draw, temperature drops mid-print — producing labels that fade toward the trailing edge. This isn't a head failure; it's voltage sag from a cell that can no longer hold its nominal 7.4V under load. Install a fresh cell and run a full-width print at maximum label density to confirm the voltage holds above 7.0V under load.